To read the content of a file, first you need to open it using the open() global function, which accepts 2 parameters: the file path, and the mode.

To read, use read mode (r):

filename = '/Users/flavio/test.txt'

file = open(filename, 'r')

#or

file = open(filename, mode='r')

Once you have the file open, you can use the read() method to read the entire content of the file into a string:

content = file.read()

You can also choose to read the content one line at a time:

line = file.readline()

It’s common to combine this with a loop, for example to read the file line by line:

filename = '/Users/flavio/test.txt'

file = open(filename, 'r')

while True:
    line = file.readline()
    if line == '': break
    print(line)

At the end of your file processing, remember to close the file:

file.close()

Lessons in this unit:

0:	Introduction
1:	Check if file or directory exists
2:	Create an empty file
3:	Create a directory
4:	▶︎ Read the content of a file
5:	Write to a file
6:	List files in a directory
7:	Get the details of a file
8:	The with statement